CN1589571A - System and method for automatically refreshing data - Google Patents
System and method for automatically refreshing data Download PDFInfo
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- CN1589571A CN1589571A CNA028231554A CN02823155A CN1589571A CN 1589571 A CN1589571 A CN 1589571A CN A028231554 A CNA028231554 A CN A028231554A CN 02823155 A CN02823155 A CN 02823155A CN 1589571 A CN1589571 A CN 1589571A
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
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- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The present invention concerns a method (200) and a system (100) for automatically refreshing previously recorded data on a recordable storage medium (110) during playback of the previously recorded data from the recordable storage medium. The method includes the steps of: reading (212) a segment of the previously recorded data from the recordable storage medium; and rewriting(218) at least a portion of the segment of the previously recorded data back onto the recordable storage medium. In addition, the method can include the step of selectively examining (214) thesegment of the previously recorded data by searching for errors in the previously recorded data in which the rewriting step can be performed only if the level of errors in the previously recorded data reaches a predetermined level.
Description
Background of invention
1. technical field
The solution of the present invention relates generally to video recording device, more specifically, relates to the video recording device that digitally coded video sequence is recorded disk media (such as recordable digital video disk, hard disk and CD).
2. description of Related Art
Current, many individuals use optical storage media technology to come recording television programs or important individual incident, such as wedding or graduation ceremony.Yet notably, several existing optical storage media technologies such as DVD or CD, have limited storage life.Just, these optical storage media technologies begin to lose the part digital information (bit) that has been recorded on the medium behind a period of time interval.For example, after data are recorded in DVD about 5 years, the data of record will begin to lose bit.The chemical reaction that light wave is produced phase change characteristic (this is used in the purpose that data is recorded in optical medium) loses its stability behind a period of time interval.And optical storage media is exposed under the temperature of variation and/or the undue external quantity of illumination can further worsen the data that are stored on such medium.Though the error correcting technique in many optical storage medias system can be remedied the information that is used to reproduce, final, losing of bit will be above error correcting capability, and the image quality severe exacerbation that causes the data of record.
In view of the relatively short data retention period of some optical storage media and the restriction of error correction, the user may be approximately must record medium to data from its original source in per 5 years again.Such program process is loaded down with trivial details and loses time, if particularly the user has collected the media piece of many storage usefulness.Therefore, needing a kind of automatic preservation has been recorded in the data of medium and has not needed user's method for recording data again.
Brief summary of the invention
The present invention relates to a kind of in the method that during the data of recordable storage medium playback precedence record, refreshes the data of precedence record on recordable medium automatically.This method can may further comprise the steps: the data of reading one section precedence record from recordable medium; And at least a portion of the data segment of precedence record write back to recordable medium again.In an arrangement, the data of precedence record can be refreshed at data retention period.
In another was arranged, the part of data segment that is write back to the precedence record on the recordable medium again was corresponding with the data segment of the data of the precedence record of reading from recordable medium.In addition, the data segment of the precedence record of reading from recordable medium and the part of data segment of data that write back to the record of recordable medium again can be at least one error correction coding (ECC) pieces.And the data that were recorded in recordable medium in the past produce maximum bitstream during the data of reproducing precedence record, and the speed of reading with the combination of re-writing step is the twice of maximum bitstream at least.The speed of reading step also can be substantially equal to the speed of re-writing step.
In another is arranged, reading step also can comprise the step of data segment of reading the data of precedence record from recordable medium in original position, and re-writing step also can comprise the step that at least a portion of the data segment of precedence record is write back to again the original position of recordable medium.In addition, the part of data segment that is write back to the precedence record of recordable medium again can be write position new on the recordable medium again.
The invention still further relates to and a kind ofly during the data of reproducing record, refresh the method that is recorded in the data on the recordable medium automatically.Method may further comprise the steps: the file directory of creating the expression that is used to tabulate when at least one data segment is recorded on the recordable medium; Data segment from the data of recordable medium playback record; And at least a portion of data segment of the data of record write back to recordable medium again, wherein this is read and certain preset time of re-writing step in the data retention period that is stored in the time in the file directory with respect to carried out.
In another arranged, recordable storage media devices can be controlled following time in the operation that equipment is not in the user and carry out and read and re-writing step.For example, in comprising the recordable storage media devices of a plurality of disk medias, this is read with re-writing step and can carry out in (wherein this equipment is under shutoff or the standby condition in appearance) during idle time interval of equipment.And reading can be according to carrying out in the predetermined elapsed time period with re-writing step, and this time period appears in the data retention period and is with respect to being stored in record creation-time in the file directory.
In another embodiment, this method also can comprise by the mistake in the data of searching precedence record checks the data segment of the data of precedence record selectively, and wherein re-writing step could be carried out when only formerly error level in the data segment of record or error number reach predetermined rank or number.
In the arrangement of another replacement, the present invention relates to a kind ofly during the data of reproducing record, refresh the method that is recorded in the data on the recordable medium automatically.Method may further comprise the steps: the data segment of reading the data of precedence record from recordable medium; In the process of being devoted to the data segment error correction, if wrong number reaches the first predetermined number in data segment, then rebound removes to read again this data segment; And if the number of times of rebound reaches the second predetermined number, then at least a portion of the data segment of the data of precedence record is write back to recordable medium again.
The invention still further relates to a kind of being used in the system that during the data of recordable storage medium playback precedence record, refreshes the data of the precedence record on recordable medium automatically.System comprises: microprocessor; And controller, its middle controller is used for: the data segment of reading the data of precedence record from recordable medium; And at least a portion of the data segment of the data of precedence record is write back to recordable medium again by the order of microprocessor.System also comprises appropriate software and the circuit of implementing aforesaid method.
The accompanying drawing summary
Fig. 1 is can be according to the block diagram of the recordable storage media devices of the automatic refresh data of invention arrangement here.
Fig. 2 is the flow chart that shows according to the operation of the automatic refresh data of property arrangement of the present invention.
Fig. 3 is the flow chart that shows according to another operation of the automatic refresh data of property arrangement of the present invention.
Fig. 4 is the flow chart that shows according to another operation of the automatic refresh data of property arrangement of the present invention.
Describe in detail
System 100 implements various advanced persons' operation characteristic according to the invention arrangement shown in the block diagram of Fig. 1.Yet the present invention is not limited to concrete system shown in Figure 1, because the present invention can implement with any other system of signal that can be receiving digitally encoded.In addition, system 100 is not limited to from the medium sense data of any particular type or writes data into the medium of any particular type, all can be used for system 100 because can store any medium of digitally coded data.
System 100 can comprise controller 112, is used for from recordable medium 110 sense datas and writes data into recordable medium 110.System 100 also can have microprocessor or microcontroller 116 and decoder 114.Control also can provide the operation that allows microprocessor 116 control decoders 114 and controller 112 with data-interface.Appropriate software or firmware can be provided in the memory, are used for the routine operation of being carried out by microcontroller 116.And, can provide routine according to the microprocessor 116 that is arranged to of the present invention.As an example, when at least one section of the data of previous record was recorded on the recordable medium, microprocessor 116 can be created the file directory for tabulation usefulness.Controller 112 also can comprise appropriate software and the circuit that is used for checking selectively the data of reading from recordable medium 110.
During recordable storage medium playback, system 100 can refresh the data of precedence record automatically.Particularly, controller 112 can be read the data segment of precedence record from recordable medium 110, then, by the instruction of microprocessor 116 at least a portion of the data of reading is write back on the recordable medium 110 again.Except several other systems 100 are handled, will illustrate in greater detail these below and read and re-writing step.
Fig. 2 is exemplary flow Figure 200 of a method showing that the data of precedence record are refreshed automatically.Yet, should see that the present invention is not limited to the sequence that shows among flow process Figure 200, because how flow process Figure 200 is refreshed automatically if only being the data of precedence record a example.In step 210, the processing procedure that refreshes the data of precedence record automatically can begin.For the present invention, term " data " can mean numerical data, audio frequency, video or their combination.This refreshing process can be initiated by user command or the predetermined command based on time-parameters, discusses as following.In one embodiment, the data of precedence record can be refreshed in the data retention period that can be predesignated.This data retention period is the time quantum before being recorded in data corruption on the recordable medium promptly wherein the reproduction of data is subjected to injurious effects to such degree preferably.As an example, if recordable medium is DVD, then data retention period can be to be about 5 years.Yet, should see that data retention period is not limited to this or any other specific time frame, and can be any other reasonable time at interval.
In step 212, can read the data segment of the data of precedence record from writing down medium.In one embodiment, the data of precedence record can be read out from original position of recordable medium.In addition, the data segment of the data of precedence record can have the size that comprises at least one error correction coding (ECC) piece.Yet the present invention is not limited to this aspect, because in step 212, the data segment of the data of any suitable precedence record can be read out from recordable medium.
As shown in the figure, in step 214, the data segment of reading can be checked selectively by searching former error on the face of the record.Notably, during this step, can handle one or more error correction indicators of the data segment that is arranged in precedence record.As an example, the multi-medium data of reading from the DVD dish can comprise one or more error correction flags, and they can be processed, so that find the mistake in the data record.These error correction flags can be inner parity mistake, outer parity mistake or their combinations that is positioned at the Reed-Solomon part.Yet, should be pointed out that these concrete error correction indicators only are examples, because any other error correction indicator that is suitable for can be used for detecting and being corrected in former error on the face of the record.
At Decision Block 216, the number of the mistake that occurs in the record that is converted is tested, if the wrong number in data segment reaches predetermined rank or number, then at least a portion of the data segment of the data of Zai Xianing can be re-written to recordable medium, shown in step 218.As an example with reference to the discussion of above relevant error correction flag, if in the data segment of the data of reading, detect 10 outer parity mistakes or 10 inner parity mistakes, the data segment is here represented an ECC piece, if or the combination of outside parity error and inner parity mistake reaches 10 in the ECC piece, then this specific ECC piece can be re-written on the dish.Yet, should see that the present invention is not limited to this concrete example, because any other predetermined level of error correction suitable, that be used for DVD or any other suitable medium can be used in the purpose of the rewriting processing procedure that triggers step 218.In addition and just as previously noted, this error detection that the present invention is not limited to discuss in this example and/or error correction designator.Get back to Decision Block 216, if error level or number formerly in Ji Lu the data can't reach predetermined number, then Decision Block 216 tests are NO, and auto refresh sequence turns back to step 212.
Get back to step 218 once more, if at least a portion of the data segment of the data of precedence record will be rewritten to recordable medium, then the data segment that will rewrite is corresponding to the data segment from recordable medium data that read, precedence record.Just, amount data, substantially the same at the precedence record of reading from recordable medium during the reading step 212 can be re-written to recordable medium in the identical position of medium or on different positions during the re-writing step 218.For example, if the data segment of the data of the precedence record of reading from recordable medium is represented the ECC piece, then the data of precedence record, that this is identical ECC piece can be re-written on the recordable medium.
In another was arranged, if the data segment of the data of precedence record is read out from original position, as discussing in step 212, then the data segment of the data of this reproduction can be re-written on this original position of recordable medium.Alternatively, data segment can be re-written on the new position of recordable medium.This new position can be any suitable position on the medium of the data that can receive precedence record during the re-writing step.
Refer step 212 and step 218, from the data of the precedence record of medium when reproduced, these data can produce maximum bit rate.In a concrete arrangement, the speed of the combination of reading step and re-writing step can be the twice of maximum bitstream at least.Therefore, if the maximum bit strearm rate of reading is 10Mbps, then the speed of the combination of reading step and re-writing step can be 20Mbps at least.In addition, the speed of reading step can equate basically with the speed of re-writing step.With reference to former example, the speed of reading step can be 10Mbps at least, and the speed of re-writing step can be 10Mbps at least back.Yet, should see that above-mentioned arrangement only is an example, and the invention is not restricted to any specific algorithm during refreshing process.With reference to flow process Figure 200,,, then handle sequence and get back to step 212 and proceed if refresh process is proceeded automatically at Decision Block 220.If not, then Decision Block 220 tests are NO, and flow process Figure 200 sequence can finish in step 222.
Flow process Figure 200 of example shows the arrangement that is used to carry out automatic refresh process, yet, several alternatives are arranged.For example, determine to rewrite the selectivity examination step (step 214 and 216) that requires, during refreshing automatically, can be skipped or be omitted.In this embodiment, step 210,212,218,220 and 222 keeps; Yet any data segment of the data of precedence record can be read out and be re-written to recordable medium on recordable medium, and the scrutiny of signal that need not to reproduce or data-signal or assessment.
With reference to Fig. 3, flow chart 300 shows another arrangement that is convenient to the data of precedence record are carried out automatic refresh process.In step 310, initiate automatic refresh process.In step 312, the data segment of precedence record can be read out from recordable medium.Many recordable storage media devices (such as the DVD register) will be read dish again and be gone up section data, so that obtain data again, and feasible successfully error correction.Therefore,,, then generate jump back instruction, make the transducer part of unit 112 change the position, obtain data segment again if the wrong number in data segment reaches first predetermined rank or the number at Decision Block 314, so that error correction, as showing in step 316.This predetermined error level can be the wrong number of being scheduled to, as what discuss for the step 216 of flow process Figure 200; Alternatively, this number can be different value.If wrong number does not reach the first predetermined rank, then flowchart sequence is got back to step 312 and is proceeded from step 312.
At Decision Block 318, test determining whether successfully to finish error correction, as provide "Yes" and then cause another time judgement at piece 320, be to finish to determine auto refresh mode in step 322, still get back to step 312 and proceed.Yet, if data segment provides the "No" result not by successfully error correction at piece 318, and rebound or transducer takes place reorientate, data obtained again, so that can carry out another error correction step.At Decision Block 324, monitor the number of times that has occurred the transducer rebound, wherein No causes sequence to turn back to step 316, changes the position of transducer.
If the number of times of rebound reaches second predetermined rank or the number, piece 324 tests are "Yes", and then at least a portion of the data segment of precedence record can be write recordable medium again, as showing in step 326.At Decision Block 320, the termination of test auto refresh mode, wherein the result just turns back to step 312 to sequence for "No"."Yes" in piece 320 then causes finishing auto refresh mode in step 322.Therefore, no matter the numerical value of the first predetermined wrong number is what, can be the criterion that triggers rewriting in step 326 for the number of the reality of the rebound of obtaining the data execution again by transducer.Therefore, re-writing step can be according to because attempt be successfully read with the predetermined times of the performed rebound of error correction data section initiates.
Fig. 4 flow for displaying Figure 40 0, another embodiment of demonstration auto refresh mode on the figure is wherein in the operation of having initiated to refresh automatically after preset time disappears at interval since the establishment record.Auto refresh mode can begin in step 410.In step 412, set up file directory, when at least one data segment was recorded in recordable medium, it listed date created and/or time, or represented the counting of time.In the arrangement of a replacement, file directory can be listed via the corrected date created of a bias (for example 4 or 5 years).One predetermined but still be within the storage life of disc data of recordable medium and be stored in file directory in date created and/or time (from foundation step 412) relevant time, carry out test in step 414, so that determine: since file (with the circular disc record) was created, whether a preset time disappeared at interval.Be used for determining that since the date of regulation the whole bag of tricks of elapsed time length is known.For example, the difference between the date created of current date and storage can be represented as fate.The fate of this disappearance can be for the numerical value that is equal to or greater than the predetermined disappearance fate of expression and tested.Similarly, if compensation record date created is stored in the file directory, then can simply compare between the file creation date,, initiate to refresh automatically operation for the date difference in the scope that belongs to predetermined positive and/or negative numerical value on current or real-time date and compensation.
Therefore, if Decision Block 414 tests are "No", then carry out a circulation, its stand-by period goes over, so that write down date createds or represent its data to satisfy the test parameter at piece 414.When the result was "Yes", then the time that has disappeared since record is created was equal to or greater than preset time, and data segment can be refreshed.In step 416, data segment can be read out from recordable medium, and in step 418, at least a portion of the data segment of data that be read out, precedence record can be written to recordable medium again.Can see that record date created file is modified, with the execution of reflection auto refresh sequence.At Decision Block 420, if refresh process finishes automatically, then the sequence of flow chart 400 finishes in step 422.If refresh process will be proceeded automatically, then handle and get back to reading step 416, wait for the next record of the elapsed time decision of satisfying step 414.
In another arranges, when recordable storage media devices not in use, recordable storage media devices can be carried out and read and re-writing step.For example, comprising a plurality of disk media and be provided in the recordable storage media devices of carrying out selective power between them, turn-offing or standby condition following time when equipment is in appearance, read with re-writing step can this equipment not duration of work be performed.Recordable storage media devices can utilize various parameters to determine not duration of work, and for example, device controller is known equipment state, reproduction, record, standby or the like.Except the timer in microcontroller, system can determine not in use or the time in the morning occur an official hour, for example of the particular day in Xuan Ding month.Like this, equipment can undertake the periodic test Device memory recording medium, and refresh satisfying various rewriting criterions, recording medium those.And, read with re-writing step and can be performed with all sequences as shown in Figure 4, wherein Yu Ding elapsed time has at interval less than duration of data retention period and it and is determined with respect to the record creation-time or the date that are stored in the file directory.As previously mentioned, the execution of auto refresh sequence also causes amendment record date created file, so that reflection refreshes the date automatically.
Can see, described in the past, be used for determining and initiate to rewrite or the various criterions of refresh mode can individually or in combination be implemented at control device.In such device, any one rewrites criterion can impel startup Refresh Data operation of the present invention.
Though the present invention describes in conjunction with the embodiment that discloses, should see that above explanation is intended to be used for illustrating rather than limiting the scope of being stipulated by claim of the present invention here.
Claims (27)
1. one kind is refreshed the method that recordable medium (110) goes up the data of precedence record automatically during the data of reproducing precedence record from recordable medium (110), it is characterized in that following steps:
Read the data segment (212) of the data of precedence record from recordable medium; And
At least a portion of the data segment of the data of precedence record is write back (218) again to recordable medium.
2. according to the method for claim 1, it is characterized in that the data of precedence record are refreshed at data retention period.
3. according to the method for claim 1, it is characterized in that this part of data segment of data of being write the precedence record on the recordable medium (110) again is corresponding with the data segment (326) of the data of the precedence record of having read from recordable medium.
4. according to the method for claim 3, it is characterized in that the data segment of the data of the precedence record of reading from recordable medium (110) and the part of data segment of data of being write the record of recordable medium (110) again are at least one error correction coding (ECC) pieces (218).
5. according to the method for claim 1, it is characterized in that, the data that before had been recorded in recordable medium (110) produce maximum bitstream during the data of reproducing precedence record, and described speed of reading with the combination of described re-writing step is the twice of this maximum bitstream at least.
6. according to the method for claim 5, it is characterized in that the speed of described reading step (212) is substantially equal to the speed of described re-writing step (218).
7. according to the method for claim 1, it is characterized in that, described reading step (212) also comprises the step of data segment of reading the data of precedence record from recordable medium (110) in original position, and described re-writing step (218) also comprises the original locational step (218) that at least a portion of the data segment of the data of precedence record is write back to again recordable medium.
8. according to the method for claim 7, it is characterized in that this part of data segment of data that is write back to the precedence record of recordable medium (110) is again write on the new position of recordable medium (218) again.
9. according to the method for claim 1, it is characterized in that providing a recordable storage media devices (100), to be used to carry out described reading (416) and re-writing step (418), wherein said reading with re-writing step do not carried out when recordable storage media devices (100) is not in the Client-initiated pattern.
10. according to the method for claim 1, it is characterized in that, mistake in the data segment of the data by searching precedence record and the step of this data segment of the data of examination (214) precedence record selectively, wherein said re-writing step (218) just are performed when only formerly the error level in this data segment of the data of record reaches predetermined rank (216).
11. one kind is refreshed the method that is recorded in the data on the recordable medium (110) automatically, it is characterized in that following steps during the data of reproducing record:
When being recorded on the recordable medium, at least one data segment creates the file directory (412) of the expression that is used to tabulate;
Data segment (416) from the data of recordable medium (110) playback record; And
When (414) take place when described reading step (416) has passed through the predetermined elapsed time since described foundation step after, just at least a portion of this data segment of the data of record is write (418) recordable medium (110) again.
12. the method according to claim 11 is characterized in that, the predetermined elapsed time appears in the data retention period.
13. one kind is refreshed the method that is recorded in the data on the recordable medium (110) automatically, it is characterized in that following steps during the data of reproducing record:
Read the data segment (312) of the data of precedence record from recordable medium (110);
If wrong number reaches the first predetermined rank (314) in data segment, then sense data section (316) is gone again in rebound; And
If the number of times of rebound (324) reaches the second predetermined number, then at least a portion of this data segment of the data of precedence record is write back (326) again to recordable medium.
14. one kind is used for refreshing the system that goes up the data of precedence record in recordable medium (110) automatically during the data of reproducing precedence record from recordable medium (110), comprises:
Microprocessor (116); With
Controller (112), wherein this controller (112) is used for:
Read the data segment (312) of the data of precedence record from recordable medium (110); And
Indication by microprocessor (116) writes back (326) at least a portion of this data segment of the data of precedence record again to recordable medium (110).
15. the system according to claim 14 is characterized in that, the data of precedence record are refreshed (414,416,418) at data retention period.
16. system according to claim 14, it is characterized in that controlled device (112) is write (326) again to the part of this data segment of the data of the precedence record of recordable medium (110) this data segment corresponding to the data of the precedence record of being read (312) by controller (117) from recordable medium (110).
17. system according to claim 16, it is characterized in that this data segment of the data of the precedence record of being read from recordable medium (110) by controller (112) and this part of this data segment of data of being write the record of recordable medium by controller (112) again are at least one ECC pieces (218).
18. system according to claim 14, it is characterized in that, when during controller (112) is reproducing the data of precedence record, reading the data of precedence record, the data that controlled device (112) is previously recorded in recordable medium (110) produce maximum bitstream, and this is read and the speed of the combination of this re-writing step is the twice of this maximum bitstream at least.
19. the system according to claim 18 is characterized in that, the speed of reading step (212) is substantially equal to the speed of re-writing step (218).
20. system according to claim 14, it is characterized in that, controller (112) is also read this data segment of the data of precedence record in original position from recordable medium (110), and at least a portion of this data segment of the data of precedence record is write back (326) again to this original position of recordable medium (110).
21. system according to claim 20, it is characterized in that controlled device (112) writes back (326) again and writes again on the new position of (326) recordable medium (110) to this part controlled device (112) of this data segment of the data of the precedence record of recordable medium (110).
22. system according to claim 14, it is characterized in that, controller (112) and microprocessor (116) are comprised in the recordable storage media devices (110), and controller is carried out this and read (416) and this rewriting (418) step when recordable storage media devices (100) is not in the Client-initiated pattern.
23. system according to claim 14, it is characterized in that, mistake in this data segment of the data of controller (112) by searching formerly record and this data segment of the data of examination (214) precedence record selectively, wherein microprocessor (116) indicating controller (112) is just carried out this re-writing step (218) when only formerly the error level in this data segment of the data of record reaches predetermined rank (216).
24. one kind is used for refreshing the system that is recorded in the data on the recordable medium (110) automatically during the data of reproducing record, it is characterized in that: microprocessor (116) is used to create one and is used for the file directory (412) of date created that the tabulation expression is recorded at least one data segment of the data on the recordable medium (110); Controller (112), wherein this controller (112) is used for: from this data segment of the data of recordable medium (110) playback record; And
Response microprocessor (116), at least a portion of this data segment of the data of record is write (418) again on recordable medium (110), and wherein said reading (416) and rewriting (418) step occurred in respect to the scheduled time (414) in the data retention period of the date created that is stored in file directory (412).
25. one kind is used for refreshing the system that is recorded in the data on the recordable medium (110) automatically during the data of reproducing record, it is characterized in that:
Microprocessor (116); With
Controller (112), wherein this controller (112) is used for:
Read the data segment (312) of the data of precedence record from recordable medium (110); And the error number of response in this data segment reach the first predetermined number (314), impels and a rebound (316) takes place so that go again sense data section (316); And
Equal the response of the second predetermined number (324) as the number of times to rebound, microprocessor (116) starts at least a portion of this data segment of the data of precedence record is write back (326) on recordable medium (110) again.
26. the method for the data on a plurality of recordable mediums (110) of bettering a record automatically is characterized in that following steps:
Select one of described recordable medium (110);
Read the file directory of information of record date created of at least one data segment of data with recordable medium (110) that expression is recorded in described selection;
If since disappearing (414), then at least a portion of this data segment in the data of record is write (418) recordable medium (110) again by a preset time behind the date created of the represented described record of the described information in the described file directory; And
Remaining recordable medium in described a plurality of recordable mediums (110) repeats described selection and reads and re-writing step.
27., it is characterized in that another step according to the method for claim 26:
Repeat described selection periodically and read rewriting and repeating step.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/990,657 | 2001-11-21 | ||
| US09/990,657 US20030095793A1 (en) | 2001-11-21 | 2001-11-21 | System and method for automatically refreshing data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1589571A true CN1589571A (en) | 2005-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA028231554A Pending CN1589571A (en) | 2001-11-21 | 2002-11-20 | System and method for automatically refreshing data |
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| Country | Link |
|---|---|
| US (1) | US20030095793A1 (en) |
| EP (1) | EP1446947A4 (en) |
| JP (1) | JP2005510826A (en) |
| KR (1) | KR20040053342A (en) |
| CN (1) | CN1589571A (en) |
| AU (1) | AU2002363941A1 (en) |
| MX (1) | MXPA04004617A (en) |
| TW (1) | TWI223144B (en) |
| WO (1) | WO2003047248A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6429984B1 (en) * | 1999-08-06 | 2002-08-06 | Komag, Inc | Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation |
| EP1484684B1 (en) * | 2003-06-06 | 2013-08-07 | Sap Ag | Method and computer system for providing a cost estimate for sizing a computer system |
| JP6234268B2 (en) * | 2014-02-21 | 2017-11-22 | シャープ株式会社 | Image forming apparatus |
| US10521403B1 (en) | 2015-02-13 | 2019-12-31 | Quobyte Inc. | System and method of providing fault-tolerant file replication |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58181163A (en) * | 1982-04-16 | 1983-10-22 | Hitachi Ltd | Controlling system of storage device |
| WO1989006428A1 (en) * | 1988-01-04 | 1989-07-13 | Eastman Kodak Company | Monitoring optical disk long term error rates |
| US5278838A (en) * | 1991-06-18 | 1994-01-11 | Ibm Corp. | Recovery from errors in a redundant array of disk drives |
| JPH09274541A (en) * | 1996-04-08 | 1997-10-21 | Canon Inc | Storage device, control method for the same, storage system and control method for the same |
| GB2312319B (en) * | 1996-04-15 | 1998-12-09 | Discreet Logic Inc | Video storage |
| US5721816A (en) * | 1996-07-29 | 1998-02-24 | Kusbel; Paul F. | Adaptive recovery of read and write errors in a disc drive |
| US6266199B1 (en) * | 1999-05-18 | 2001-07-24 | International Business Machines Corporation | Method of apparatus to characterize and limit the effect of disk damage in a hard disk drive |
| US6429984B1 (en) * | 1999-08-06 | 2002-08-06 | Komag, Inc | Circuit and method for refreshing data recorded at a density sufficiently high to undergo thermal degradation |
| JP2001216605A (en) * | 2000-01-28 | 2001-08-10 | Fujitsu Ltd | Information refresh method |
-
2001
- 2001-11-21 US US09/990,657 patent/US20030095793A1/en not_active Abandoned
-
2002
- 2002-11-20 KR KR10-2004-7007625A patent/KR20040053342A/en not_active Application Discontinuation
- 2002-11-20 AU AU2002363941A patent/AU2002363941A1/en not_active Abandoned
- 2002-11-20 MX MXPA04004617A patent/MXPA04004617A/en unknown
- 2002-11-20 WO PCT/US2002/037286 patent/WO2003047248A1/en not_active Application Discontinuation
- 2002-11-20 EP EP02798456A patent/EP1446947A4/en not_active Withdrawn
- 2002-11-20 CN CNA028231554A patent/CN1589571A/en active Pending
- 2002-11-20 JP JP2003548532A patent/JP2005510826A/en not_active Withdrawn
- 2002-11-20 TW TW091133826A patent/TWI223144B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP1446947A1 (en) | 2004-08-18 |
| US20030095793A1 (en) | 2003-05-22 |
| AU2002363941A1 (en) | 2003-06-10 |
| EP1446947A4 (en) | 2007-04-04 |
| TWI223144B (en) | 2004-11-01 |
| WO2003047248A1 (en) | 2003-06-05 |
| JP2005510826A (en) | 2005-04-21 |
| MXPA04004617A (en) | 2004-08-13 |
| TW200303461A (en) | 2003-09-01 |
| KR20040053342A (en) | 2004-06-23 |
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